1 /*
2 * Copyright (C) 2016 Rob Clark <robclark@freedesktop.org>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
13 * Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 *
23 * Authors:
24 * Rob Clark <robclark@freedesktop.org>
25 */
26
27 #include "pipe/p_state.h"
28 #include "util/format/u_format.h"
29 #include "util/u_inlines.h"
30 #include "util/u_memory.h"
31 #include "util/u_string.h"
32
33 #include "fd5_format.h"
34 #include "fd5_texture.h"
35
36 static enum a5xx_tex_clamp
tex_clamp(unsigned wrap,bool * needs_border)37 tex_clamp(unsigned wrap, bool *needs_border)
38 {
39 switch (wrap) {
40 case PIPE_TEX_WRAP_REPEAT:
41 return A5XX_TEX_REPEAT;
42 case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
43 return A5XX_TEX_CLAMP_TO_EDGE;
44 case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
45 *needs_border = true;
46 return A5XX_TEX_CLAMP_TO_BORDER;
47 case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
48 /* only works for PoT.. need to emulate otherwise! */
49 return A5XX_TEX_MIRROR_CLAMP;
50 case PIPE_TEX_WRAP_MIRROR_REPEAT:
51 return A5XX_TEX_MIRROR_REPEAT;
52 case PIPE_TEX_WRAP_MIRROR_CLAMP:
53 case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
54 /* these two we could perhaps emulate, but we currently
55 * just don't advertise PIPE_CAP_TEXTURE_MIRROR_CLAMP
56 */
57 default:
58 DBG("invalid wrap: %u", wrap);
59 return 0;
60 }
61 }
62
63 static enum a5xx_tex_filter
tex_filter(unsigned filter,bool aniso)64 tex_filter(unsigned filter, bool aniso)
65 {
66 switch (filter) {
67 case PIPE_TEX_FILTER_NEAREST:
68 return A5XX_TEX_NEAREST;
69 case PIPE_TEX_FILTER_LINEAR:
70 return aniso ? A5XX_TEX_ANISO : A5XX_TEX_LINEAR;
71 default:
72 DBG("invalid filter: %u", filter);
73 return 0;
74 }
75 }
76
77 static void *
fd5_sampler_state_create(struct pipe_context * pctx,const struct pipe_sampler_state * cso)78 fd5_sampler_state_create(struct pipe_context *pctx,
79 const struct pipe_sampler_state *cso)
80 {
81 struct fd5_sampler_stateobj *so = CALLOC_STRUCT(fd5_sampler_stateobj);
82 unsigned aniso = util_last_bit(MIN2(cso->max_anisotropy >> 1, 8));
83 bool miplinear = false;
84
85 if (!so)
86 return NULL;
87
88 so->base = *cso;
89
90 if (cso->min_mip_filter == PIPE_TEX_MIPFILTER_LINEAR)
91 miplinear = true;
92
93 so->needs_border = false;
94 so->texsamp0 =
95 COND(miplinear, A5XX_TEX_SAMP_0_MIPFILTER_LINEAR_NEAR) |
96 A5XX_TEX_SAMP_0_XY_MAG(tex_filter(cso->mag_img_filter, aniso)) |
97 A5XX_TEX_SAMP_0_XY_MIN(tex_filter(cso->min_img_filter, aniso)) |
98 A5XX_TEX_SAMP_0_ANISO(aniso) |
99 A5XX_TEX_SAMP_0_WRAP_S(tex_clamp(cso->wrap_s, &so->needs_border)) |
100 A5XX_TEX_SAMP_0_WRAP_T(tex_clamp(cso->wrap_t, &so->needs_border)) |
101 A5XX_TEX_SAMP_0_WRAP_R(tex_clamp(cso->wrap_r, &so->needs_border));
102
103 so->texsamp1 =
104 COND(!cso->seamless_cube_map, A5XX_TEX_SAMP_1_CUBEMAPSEAMLESSFILTOFF) |
105 COND(!cso->normalized_coords, A5XX_TEX_SAMP_1_UNNORM_COORDS);
106
107 so->texsamp0 |= A5XX_TEX_SAMP_0_LOD_BIAS(cso->lod_bias);
108
109 if (cso->min_mip_filter != PIPE_TEX_MIPFILTER_NONE) {
110 so->texsamp1 |= A5XX_TEX_SAMP_1_MIN_LOD(cso->min_lod) |
111 A5XX_TEX_SAMP_1_MAX_LOD(cso->max_lod);
112 } else {
113 /* If we're not doing mipmap filtering, we still need a slightly > 0
114 * LOD clamp so the HW can decide between min and mag filtering of
115 * level 0.
116 */
117 so->texsamp1 |= A5XX_TEX_SAMP_1_MIN_LOD(MIN2(cso->min_lod, 0.125f)) |
118 A5XX_TEX_SAMP_1_MAX_LOD(MIN2(cso->max_lod, 0.125f));
119 }
120
121 if (cso->compare_mode)
122 so->texsamp1 |=
123 A5XX_TEX_SAMP_1_COMPARE_FUNC(cso->compare_func); /* maps 1:1 */
124
125 return so;
126 }
127
128 static struct pipe_sampler_view *
fd5_sampler_view_create(struct pipe_context * pctx,struct pipe_resource * prsc,const struct pipe_sampler_view * cso)129 fd5_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
130 const struct pipe_sampler_view *cso)
131 {
132 struct fd5_pipe_sampler_view *so = CALLOC_STRUCT(fd5_pipe_sampler_view);
133 struct fd_resource *rsc = fd_resource(prsc);
134 enum pipe_format format = cso->format;
135 unsigned lvl, layers = 0;
136
137 if (!so)
138 return NULL;
139
140 if (format == PIPE_FORMAT_X32_S8X24_UINT) {
141 rsc = rsc->stencil;
142 format = rsc->b.b.format;
143 }
144
145 so->base = *cso;
146 pipe_reference(NULL, &prsc->reference);
147 so->base.texture = prsc;
148 so->base.reference.count = 1;
149 so->base.context = pctx;
150
151 so->texconst0 = A5XX_TEX_CONST_0_FMT(fd5_pipe2tex(format)) |
152 A5XX_TEX_CONST_0_SAMPLES(fd_msaa_samples(prsc->nr_samples)) |
153 fd5_tex_swiz(format, cso->swizzle_r, cso->swizzle_g,
154 cso->swizzle_b, cso->swizzle_a);
155
156 /* NOTE: since we sample z24s8 using 8888_UINT format, the swizzle
157 * we get isn't quite right. Use SWAP(XYZW) as a cheap and cheerful
158 * way to re-arrange things so stencil component is where the swiz
159 * expects.
160 *
161 * Note that gallium expects stencil sampler to return (s,s,s,s)
162 * which isn't quite true. To make that happen we'd have to massage
163 * the swizzle. But in practice only the .x component is used.
164 */
165 if (format == PIPE_FORMAT_X24S8_UINT) {
166 so->texconst0 |= A5XX_TEX_CONST_0_SWAP(XYZW);
167 }
168
169 if (util_format_is_srgb(format)) {
170 so->texconst0 |= A5XX_TEX_CONST_0_SRGB;
171 }
172
173 if (cso->target == PIPE_BUFFER) {
174 unsigned elements = cso->u.buf.size / util_format_get_blocksize(format);
175
176 lvl = 0;
177 so->texconst1 = A5XX_TEX_CONST_1_WIDTH(elements & MASK(15)) |
178 A5XX_TEX_CONST_1_HEIGHT(elements >> 15);
179 so->texconst2 = A5XX_TEX_CONST_2_BUFFER;
180 so->offset = cso->u.buf.offset;
181 } else {
182 unsigned miplevels;
183
184 lvl = fd_sampler_first_level(cso);
185 miplevels = fd_sampler_last_level(cso) - lvl;
186 layers = cso->u.tex.last_layer - cso->u.tex.first_layer + 1;
187
188 so->texconst0 |= A5XX_TEX_CONST_0_MIPLVLS(miplevels);
189 so->texconst1 = A5XX_TEX_CONST_1_WIDTH(u_minify(prsc->width0, lvl)) |
190 A5XX_TEX_CONST_1_HEIGHT(u_minify(prsc->height0, lvl));
191 so->texconst2 = A5XX_TEX_CONST_2_PITCHALIGN(rsc->layout.pitchalign - 6) |
192 A5XX_TEX_CONST_2_PITCH(fd_resource_pitch(rsc, lvl));
193 so->offset = fd_resource_offset(rsc, lvl, cso->u.tex.first_layer);
194 }
195
196 so->texconst2 |= A5XX_TEX_CONST_2_TYPE(fd5_tex_type(cso->target));
197
198 switch (cso->target) {
199 case PIPE_TEXTURE_RECT:
200 case PIPE_TEXTURE_1D:
201 case PIPE_TEXTURE_2D:
202 so->texconst3 = A5XX_TEX_CONST_3_ARRAY_PITCH(rsc->layout.layer_size);
203 so->texconst5 = A5XX_TEX_CONST_5_DEPTH(1);
204 break;
205 case PIPE_TEXTURE_1D_ARRAY:
206 case PIPE_TEXTURE_2D_ARRAY:
207 so->texconst3 = A5XX_TEX_CONST_3_ARRAY_PITCH(rsc->layout.layer_size);
208 so->texconst5 = A5XX_TEX_CONST_5_DEPTH(layers);
209 break;
210 case PIPE_TEXTURE_CUBE:
211 case PIPE_TEXTURE_CUBE_ARRAY:
212 so->texconst3 = A5XX_TEX_CONST_3_ARRAY_PITCH(rsc->layout.layer_size);
213 so->texconst5 = A5XX_TEX_CONST_5_DEPTH(layers / 6);
214 break;
215 case PIPE_TEXTURE_3D:
216 so->texconst3 =
217 A5XX_TEX_CONST_3_MIN_LAYERSZ(
218 fd_resource_slice(rsc, prsc->last_level)->size0) |
219 A5XX_TEX_CONST_3_ARRAY_PITCH(fd_resource_slice(rsc, lvl)->size0);
220 so->texconst5 = A5XX_TEX_CONST_5_DEPTH(u_minify(prsc->depth0, lvl));
221 break;
222 default:
223 so->texconst3 = 0x00000000;
224 break;
225 }
226
227 return &so->base;
228 }
229
230 void
fd5_texture_init(struct pipe_context * pctx)231 fd5_texture_init(struct pipe_context *pctx)
232 {
233 pctx->create_sampler_state = fd5_sampler_state_create;
234 pctx->bind_sampler_states = fd_sampler_states_bind;
235 pctx->create_sampler_view = fd5_sampler_view_create;
236 pctx->set_sampler_views = fd_set_sampler_views;
237 }
238